Patent attributes
A fire sensor, fire sensing apparatus and a fire sensing system are disclosed. The fire sensor includes a layer of fibers arranged to cross one another at intersections. The fibers have an electromagnetic property which is changeable upon contact with fire and they are individually connectible to a detector of fire sensing apparatus to detect any change in the electromagnetic property. A change in electromagnetic property detected at any intersection of two fibers will indicate a fire at the location of that intersection. A movement of that location across the sensor will indicate the direction of travel of the fire. The sensing system is capable of sending alerts and extinguishing the fire.